21020130522141949.0LERSSE-PRESENTATION-2009-079freQiang WeiAuthorization Recycling in RBAC Systems2008-06-30mult. pAs distributed applications increase in size and complexity, traditional authorization mechanisms based on a single policy decision point are increasingly fragile because this decision point represents a single point of failure and a performance bottleneck. Authorization recycling is one technique that has been used to address these challenges. This paper introduces and evaluates the mechanisms for authorization recycling in RBAC enterprise systems. The algorithms that support these mechanisms allow precise and approximate authorization decisions to be made, thereby masking possible failures of the policy decision point and reducing its load. We evaluate these algorithms analytically and using a prototype implementation. Our evaluation results demonstrate that authorization recycling can improve the performance of distributed access control mechanisms.Qiang Wei, Jason Crampton, Konstantin Beznosov, and Matei Ripeanu, “Authorization Recycling in RBAC Systems,” in the Proceedings of the 13th ACM Symposium on Access Control Models and Technologies (SACMAT’08), Estes Park, Colorado, 11-13 June, 2008, pp.63-72.SAAMJAMESAuthorization recyclingRBACJason CramptonKonstantin BeznosovMatei Ripeanuqiangw@ece.ubc.cahttp://lersse-dl.ece.ubc.ca/record/210/files/210.pdfTransfer from CDS 0.99.7PRESENTATION